{"id":11445,"date":"2026-03-20T15:48:27","date_gmt":"2026-03-20T15:48:27","guid":{"rendered":"https:\/\/edrmedeso.com\/?post_type=article&#038;p=11445"},"modified":"2026-03-20T15:56:37","modified_gmt":"2026-03-20T15:56:37","slug":"lens-design-and-straylight-analysis-for-cameras-in-zemax-and-speos-workflow-overview","status":"publish","type":"article","link":"https:\/\/edrmedeso.com\/article\/lens-design-and-straylight-analysis-for-cameras-in-zemax-and-speos-workflow-overview\/","title":{"rendered":"Lens Design and Straylight Analysis for Cameras in Zemax and Speos: Workflow Overview"},"content":{"rendered":"<h4>Designing modern camera systems is increasingly complex. Whether for smartphones, automotive cameras, or industrial vision, optical engineers must deliver high image quality while controlling unwanted effects such as ghost images and stray light.<\/h4>\n<h4>This article gives a clear, easy-to-follow overview of how Ansys Zemax OpticStudio and Ansys Speos work together to support lens design, straylight analysis, and signal-to-noise evaluation.<\/h4>\n<p>&nbsp;<\/p>\n<h3><span class=\"TextRun SCXW87423457 BCX8\" lang=\"EN-US\" xml:lang=\"EN-US\" data-contrast=\"auto\"><span class=\"NormalTextRun SCXW87423457 BCX8\">Why Use Both Zemax OpticStudio and Speos?<\/span><\/span><\/h3>\n<p>Ansys provides complementary optical simulation tools that address different stages of camera development:<\/p>\n<ul>\n<li>Zemax OpticStudio is ideal for lens design and optimization, including image quality evaluation and early ghost analysis.<\/li>\n<li>Ansys Speos is designed for large-scale straylight analysis, realistic environments, and efficient system-level simulation.<\/li>\n<\/ul>\n<p>Using both tools together enables a smooth, end-to-end workflow for simulation-driven camera design.<\/p>\n<p>&nbsp;<\/p>\n<h3><span class=\"TextRun SCXW216569839 BCX8\" lang=\"EN-US\" xml:lang=\"EN-US\" data-contrast=\"auto\"><span class=\"NormalTextRun SCXW216569839 BCX8\">Step 1: Lens Design in Zemax OpticStudio<\/span><\/span><span class=\"EOP SCXW216569839 BCX8\" data-ccp-props=\"{}\">\u00a0<\/span><\/h3>\n<p>Camera development typically starts in Zemax OpticStudio (Sequential Mode), where engineers define and optimize the lens layout.<\/p>\n<p>General workflow is:<\/p>\n<p><span style=\"color: #54beb3;\"><strong>\u00a01.<\/strong><\/span>\u00a0 Define requirements of the camera system<\/p>\n<p><span style=\"color: #54beb3;\"><strong>\u00a02.\u00a0<\/strong> <\/span>Optimizing optical performance using merit function<\/p>\n<p><span style=\"color: #54beb3;\"><strong>\u00a03.<\/strong> \u00a0<\/span>Ensure robustness of the system through tolerancing analysis<\/p>\n<p>Sequential mode allows fast iteration and is well suited for building a solid optical baseline.<\/p>\n<h4>Image Simulation<\/h4>\n<p>Zemax image simulation tools help engineers visualize how a real scene appears through the lens. This makes it easier to assess distortion, vignetting, and edge performance \u2013 and to communicate results beyond the optics team.<\/p>\n<p><img decoding=\"async\" class=\"alignnone wp-image-11446\" src=\"https:\/\/edrmedeso.com\/wp-content\/uploads\/2026\/03\/Diffraction-aberrations-600x480.png\" alt=\"\" width=\"513\" height=\"410\" srcset=\"https:\/\/edrmedeso.com\/wp-content\/uploads\/2026\/03\/Diffraction-aberrations-600x480.png 600w, https:\/\/edrmedeso.com\/wp-content\/uploads\/2026\/03\/Diffraction-aberrations-300x240.png 300w, https:\/\/edrmedeso.com\/wp-content\/uploads\/2026\/03\/Diffraction-aberrations-768x614.png 768w, https:\/\/edrmedeso.com\/wp-content\/uploads\/2026\/03\/Diffraction-aberrations.png 920w\" sizes=\"(max-width: 513px) 100vw, 513px\" \/><\/p>\n<p>&nbsp;<\/p>\n<h3>Step 2: Ghost Analysis Before Straylight<\/h3>\n<p>Before full straylight analysis, ghost images must be addressed.<\/p>\n<p>In Zemax, ghost analysis helps engineers:<\/p>\n<ul>\n<li>Identify unwanted reflections between lens surfaces<\/li>\n<li>Evaluate ghost intensity and location<\/li>\n<li>Improve performance using coatings and design changes<\/li>\n<\/ul>\n<p>A simple rule applies: poor ghost performance leads to poor straylight results. Fixing ghosts early saves time later.<\/p>\n<p><span data-ccp-props=\"{}\"> <img decoding=\"async\" class=\"alignnone wp-image-11447\" src=\"https:\/\/edrmedeso.com\/wp-content\/uploads\/2026\/03\/image-8-600x342.png\" alt=\"\" width=\"505\" height=\"288\" srcset=\"https:\/\/edrmedeso.com\/wp-content\/uploads\/2026\/03\/image-8-600x342.png 600w, https:\/\/edrmedeso.com\/wp-content\/uploads\/2026\/03\/image-8-1500x854.png 1500w, https:\/\/edrmedeso.com\/wp-content\/uploads\/2026\/03\/image-8-300x171.png 300w, https:\/\/edrmedeso.com\/wp-content\/uploads\/2026\/03\/image-8-768x437.png 768w, https:\/\/edrmedeso.com\/wp-content\/uploads\/2026\/03\/image-8-1536x874.png 1536w, https:\/\/edrmedeso.com\/wp-content\/uploads\/2026\/03\/image-8.png 1704w\" sizes=\"(max-width: 505px) 100vw, 505px\" \/><br \/>\n<\/span><\/p>\n<p>&nbsp;<\/p>\n<h3><b><span data-contrast=\"auto\">Step 3: Straylight Analysis in Zemax (Non-Sequential Mode)<\/span><\/b><\/h3>\n<p>Once the lens design is stable, it is converted to non-sequential mode for straylight analysis.<\/p>\n<p>This enables modeling of:<\/p>\n<ul>\n<li>Scattering<\/li>\n<li>Ray splitting<\/li>\n<li>Complex interactions with mechanical components<\/li>\n<\/ul>\n<p>Tools like the Sequence Selector help group and filter ray paths, making it easier to understand which surfaces contribute most to straylight.<\/p>\n<p><img decoding=\"async\" class=\"alignnone wp-image-11449\" src=\"https:\/\/edrmedeso.com\/wp-content\/uploads\/2026\/03\/image-11-600x357.png\" alt=\"\" width=\"507\" height=\"302\" srcset=\"https:\/\/edrmedeso.com\/wp-content\/uploads\/2026\/03\/image-11-600x357.png 600w, https:\/\/edrmedeso.com\/wp-content\/uploads\/2026\/03\/image-11-1500x893.png 1500w, https:\/\/edrmedeso.com\/wp-content\/uploads\/2026\/03\/image-11-300x179.png 300w, https:\/\/edrmedeso.com\/wp-content\/uploads\/2026\/03\/image-11-768x457.png 768w, https:\/\/edrmedeso.com\/wp-content\/uploads\/2026\/03\/image-11-1536x914.png 1536w, https:\/\/edrmedeso.com\/wp-content\/uploads\/2026\/03\/image-11-2048x1219.png 2048w\" sizes=\"(max-width: 507px) 100vw, 507px\" \/><\/p>\n<p>&nbsp;<\/p>\n<h3>Step 4: Export to Ansys Speos<\/h3>\n<p>For more demanding studies, the optical system can be exported from Zemax to Ansys Speos using Optical Design Exchange (ODX).<\/p>\n<p>Speos is especially useful when:<\/p>\n<ul>\n<li>Millions of rays where GPU acceleration and HPC can be leveraged<\/li>\n<li>Multiple illumination or sun positions must be evaluated<\/li>\n<li>There is a high number of CAD geometry and realistic environments are involved<\/li>\n<\/ul>\n<p>This is particularly relevant for automotive and outdoor camera systems.<\/p>\n<p>&nbsp;<\/p>\n<h3>Step 5: Straylight and SNR Evaluation in Speos<\/h3>\n<p>In Speos, engineers can perform advanced straylight analysis and signal-to-noise ratio (SNR) evaluation.<\/p>\n<p>Key benefits include:<\/p>\n<ul>\n<li>Clear separation of useful signal and unwanted light<\/li>\n<li>Identification of critical straylight paths<\/li>\n<li>Quantitative energy analysis on the sensor<\/li>\n<\/ul>\n<p>This insight supports targeted design improvements rather than trial-and-error changes.<\/p>\n<p><img decoding=\"async\" class=\"alignnone wp-image-11451\" src=\"https:\/\/edrmedeso.com\/wp-content\/uploads\/2026\/03\/222-600x338.gif\" alt=\"\" width=\"467\" height=\"263\" srcset=\"https:\/\/edrmedeso.com\/wp-content\/uploads\/2026\/03\/222-600x338.gif 600w, https:\/\/edrmedeso.com\/wp-content\/uploads\/2026\/03\/222-300x169.gif 300w, https:\/\/edrmedeso.com\/wp-content\/uploads\/2026\/03\/222-768x432.gif 768w\" sizes=\"(max-width: 467px) 100vw, 467px\" \/> <img decoding=\"async\" class=\"alignnone wp-image-11450\" src=\"https:\/\/edrmedeso.com\/wp-content\/uploads\/2026\/03\/111-600x338.gif\" alt=\"\" width=\"468\" height=\"264\" srcset=\"https:\/\/edrmedeso.com\/wp-content\/uploads\/2026\/03\/111-600x338.gif 600w, https:\/\/edrmedeso.com\/wp-content\/uploads\/2026\/03\/111-300x169.gif 300w, https:\/\/edrmedeso.com\/wp-content\/uploads\/2026\/03\/111-768x432.gif 768w\" sizes=\"(max-width: 468px) 100vw, 468px\" \/><\/p>\n<p>&nbsp;<\/p>\n<h3>Reducing Straylight in Camera Systems<\/h3>\n<p>Simulation results typically guide practical mitigation strategies such as:<\/p>\n<ul>\n<li>Applying anti-reflective (AR) coatings<\/li>\n<li>Adding or refining baffles and apertures<\/li>\n<li>Optimizing lens hoods and mechanical geometry<\/li>\n<\/ul>\n<p>While straylight cannot always be eliminated, simulation helps define acceptable limits and informed design trade-offs.<\/p>\n<p>&nbsp;<\/p>\n<h3>Conclusion<\/h3>\n<p><strong>By combining lens design in Zemax OpticStudio with system-level straylight analysis in Ansys Speos, optical engineers gain a practical and efficient workflow for camera development. This simulation-first approach reduces risk, improves insight, and supports better-performing imaging systems.<br \/>\n<\/strong><\/p>\n<p>&nbsp;<\/p>\n<hr \/>\n<h4>Register for our upcoming webinar!<\/h4>\n<p>\ud83d\udcc6 On April 15, we will host a new live webinar on the topic <span style=\"color: #54beb3;\"><strong>Camer<\/strong><\/span><span style=\"color: #54beb3;\"><strong>a Straylight Simulation in Ansys Speos (Zemax\u2011to\u2011Speos Workflow)<\/strong><span style=\"color: #000000;\">. If this topic is of interest to you, make sure to save your spot now!<\/span><\/span><\/p>\n<p><a href=\"https:\/\/edrmedeso.com\/webinar\/camera-straylight-simulation-in-ansys-speos-zemax-to-speos-workflow\/\" target=\"_blank\" rel=\"noopener\">Learn more &amp; register<\/a><\/p>\n<p><img decoding=\"async\" class=\"alignnone wp-image-11443\" src=\"https:\/\/edrmedeso.com\/wp-content\/uploads\/2026\/03\/Granta-MI-webinar-Website-image-5-600x340.png\" alt=\"\" width=\"540\" height=\"306\" srcset=\"https:\/\/edrmedeso.com\/wp-content\/uploads\/2026\/03\/Granta-MI-webinar-Website-image-5-600x340.png 600w, https:\/\/edrmedeso.com\/wp-content\/uploads\/2026\/03\/Granta-MI-webinar-Website-image-5-1500x850.png 1500w, https:\/\/edrmedeso.com\/wp-content\/uploads\/2026\/03\/Granta-MI-webinar-Website-image-5-300x170.png 300w, https:\/\/edrmedeso.com\/wp-content\/uploads\/2026\/03\/Granta-MI-webinar-Website-image-5-768x435.png 768w, https:\/\/edrmedeso.com\/wp-content\/uploads\/2026\/03\/Granta-MI-webinar-Website-image-5-1536x870.png 1536w, https:\/\/edrmedeso.com\/wp-content\/uploads\/2026\/03\/Granta-MI-webinar-Website-image-5.png 1800w\" sizes=\"(max-width: 540px) 100vw, 540px\" \/><\/p>\n<h4>Watch our on-demand webinar<\/h4>\n<p>\ud83c\udfa5 <span style=\"color: #54beb3;\"><strong>Coffee with an Expert \u2013 Lens Design &amp; Analysis for Cameras with Zemax &amp; Speos<\/strong><\/span><\/p>\n<p><a href=\"https:\/\/edrmedeso.com\/video\/coffee-with-an-expert-lens-design-analysis-for-cameras-with-zemax-speos\/\" target=\"_blank\" rel=\"noopener\">Go to video<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Designing modern camera systems is increasingly complex. Whether for smartphones, automotive cameras, or industrial vision, optical engineers must deliver high image quality while controlling unwanted effects such as ghost images and stray light. This article gives a clear, easy-to-follow overview of how Ansys Zemax OpticStudio and Ansys Speos work together to support lens design, straylight [&hellip;]<\/p>\n","protected":false},"featured_media":11067,"parent":0,"menu_order":0,"template":"","class_list":["post-11445","article","type-article","status-publish","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Lens Design and Straylight Analysis for Camera Systems<\/title>\n<meta name=\"description\" content=\"Lens design and straylight analysis are critical for camera performance. 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